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CVE-2009-2847

Status Candidate

Overview

The do_sigaltstack function in kernel/signal.c in Linux kernel 2.4 through 2.4.37 and 2.6 before 2.6.31-rc5, when running on 64-bit systems, does not clear certain padding bytes from a structure, which allows local users to obtain sensitive information from the kernel stack via the sigaltstack function.

Related Files

Debian Linux Security Advisory 1928-1
Posted Nov 6, 2009
Authored by Debian | Site debian.org

Debian Linux Security Advisory 1928-1 - Several vulnerabilities have been discovered in the Linux kernel that may lead to a denial of service, sensitive memory leak or privilege escalation.

tags | advisory, denial of service, kernel, vulnerability, memory leak
systems | linux, debian
advisories | CVE-2009-2846, CVE-2009-2847, CVE-2009-2848, CVE-2009-2849, CVE-2009-2903, CVE-2009-2908, CVE-2009-2909, CVE-2009-2910, CVE-2009-3001, CVE-2009-3002, CVE-2009-3228, CVE-2009-3238, CVE-2009-3286, CVE-2009-3547, CVE-2009-3612, CVE-2009-3613, CVE-2009-3620, CVE-2009-3621
SHA-256 | 255b72681dc3cd0096d0fb6cef9279f3ff870acdd82213aa7d237579d98b2877
Ubuntu Security Notice 852-1
Posted Oct 23, 2009
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 852-1 - A large amount of vulnerabilities in the Linux 2.6.15 kernel have been addressed.

tags | advisory, kernel, vulnerability
systems | linux, ubuntu
advisories | CVE-2009-1883, CVE-2009-2584, CVE-2009-2695, CVE-2009-2698, CVE-2009-2767, CVE-2009-2846, CVE-2009-2847, CVE-2009-2848, CVE-2009-2849, CVE-2009-2903, CVE-2009-2908, CVE-2009-3001, CVE-2009-3002, CVE-2009-3238, CVE-2009-3286, CVE-2009-3288, CVE-2009-3290
SHA-256 | e49b64e7e735abea730fc3d8d2eb17713aaa33fcc5c172954e43bb3b8e41aa33
Debian Linux Security Advisory 1872-1
Posted Aug 24, 2009
Authored by Debian | Site debian.org

Debian Security Advisory 1872-1 - Several vulnerabilities have been discovered in the Linux kernel that may lead to denial of service, privilege escalation or a leak of sensitive memory.

tags | advisory, denial of service, kernel, vulnerability
systems | linux, debian
advisories | CVE-2009-2698, CVE-2009-2846, CVE-2009-2847, CVE-2009-2848, CVE-2009-2849
SHA-256 | cf39db21b853f2de19fa7441b737a0a470a70d17a10d2adf60f45715f7040e1e
Openwall Linux Kernel Patch
Posted Aug 23, 2009
Authored by Solar Designer | Site openwall.com

The Openwall Linux kernel patch is a collection of security hardening features for the Linux kernel which can stop most 'cookbook' buffer overflow exploits. The patch can also add more privacy to the system by restricting access to parts of /proc so that users may not see what others are doing. Also tightens down file descriptors 0, 1, and 2, implements process limits and shared memory destruction.

Changes: Besides being an update to the 2.4.37.5 kernel release, this revision of the patch adds a fix for the sigaltstack local information leak affecting 64-bit kernel builds.)
tags | overflow, kernel
systems | linux
advisories | CVE-2009-2847
SHA-256 | b7b6877b1d7e4631f1bd26baae92087f511563b1a0c96034f9ac6c168a3ad3dd
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